coronavirus vaccine when the national rollout begins.Margaret Keenan, 90, became the first person in the world to receive the Pfizer Covid-19 jab on Tuesday, with people over 80 and healthcare workers the first to be vaccinated.Since then it has been given to several people at 50 different hospitals, but some people will not be on the vaccination list when it is widely distributed.Children under the age of 16, pregnant women and people with a history of "significant" allergic reactions will not take the vaccine.UK regulators have warned that people with allergies should not be given the Pfizer/BioNTech vaccine after two NHS staff members suffered an allergic reaction.It is understood both patients are recovering.Professor Stephen Powis,.